About this trial
The goal of this clinical trial is to learn whether platelet-rich plasma (PRP) injection, made from a participant's own blood, can help heal the tendon and improve shoulder symptoms in people with partial tears of the supraspinatus tendon.
The main questions it aims to answer are:
* Does PRP help the tendon heal? * Does PRP improve pain, shoulder movement, daily function, and shoulder magnetic resonance imaging (MRI) findings?
Researchers will compare PRP plus standard of care (physical therapy) to standard of care alone to see if PRP leads to better healing and better clinical results. Researchers will also study if differences in specific biomolecules in PRP are associated with differences in treatment response.
Participants will:
* receive standard of care treatment, with or without PRP injection depending on the study group * have blood collected for PRP preparation * have their pain, shoulder movement, and shoulder function assessed * undergo shoulder MRI scans * be followed over time to measure healing and symptom improvement
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Eligible patients are at least 18 years old, and have clinical (VAS pain score ≥4, loss of >25% in ROM, positive in at least one clinical test such as Jobe, Neer, Drop arm, Hawins-Kennedy, Patte) and imaging findings compatible with partial supraspinatus tear, within 3 months of diagnosis.
Patients may have undergone conservative treatments, including lifestyle modification, oral analgesics, or physical therapy, with the exception of shoulder injections.
Must be willing to provide consent.
Disqualifiers
Patients less than 18 years old
Patients with other or concomitant rotator cuff or shoulder muscle/tendon tear(s), complete tears, SLAP tears ≥ grade 2
Patients with auto-immune based joint diseases, osteoarthritis (KL grade ≥ 2), adhesive capsulitis, infection, nerve-related conditions, immunocompromised conditions, malignancy, coagulopathy
Patients on antiplatelet, anticoagulant, antitumor or immunosuppressive drugs
Trial design
Parallel
Treatments tested in this trial
Platelet-Rich Plasma (PRP) Injections
Biological/VaccineAutologous leucocyte-poor platelet-rich plasma prepared from peripheral blood collected on the day of treatment and administered as a single ultrasound-guided percutaneous injection at or near the partial supraspinatus tendon tear, in addition to standard rehabilitation care. PRP is processed by centrifugation and a residual sample is reserved for cellular and molecular characterization
Treatment groups
Trial outcomes
Primary outcomes
Change From Baseline in Target Shoulder Pain Intensity Measured by Visual Analog Scale (VAS)
Pain intensity in the target shoulder will be assessed using the Visual Analog Scale (VAS). The outcome measure is the change in VAS score from baseline to 24 months.
Secondary outcomes
Changes From Baseline in Constant-Murley Score and Subjective Shoulder Value
Shoulder function and clinical range of motion will be assessed using the Constant-Murley and Subjective Shoulder Value scores. The outcome measure is the change in score from baseline to 12 months.
Change From Baseline in 12-Item Short Form Survey (SF-12) Mental Health Score
Health-related quality of life will be assessed using the mental health domain of the 12-Item Short Form Survey (SF-12). The outcome measure is the change in score from baseline to 24 months.
Change From Baseline in Supraspinatus Tear Size on Magnetic Resonance Imaging (MRI)
Structural tendon changes will be assessed by T2 mapping on MRI. The outcome measures are the change in supraspinatus tear size and the change in signal intensity from baseline to 12 months.
Platelet-Rich plasma cell and molecular count
Platelet, leukocyte, growth factors, and cytokynes concentrations will be measured in the PRP sample prepared for injection
Locations
Sponsors and contacts
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Universidade Nova de Lisboa
Lead sponsor
Hospital da Luz, Portugal
Collaborator
This trial is not recruiting at the moment. You can still explore other options: